In recent years, Swifty Transportation purchased three used buses. Because of frequent turnover intccounting department, a different accountant selected the depreciation method for each bus, and various methods were selera Information concerning the buses is shown as follows. Salvage Value Useful Life in Years Depreciation Method Bus Acquired Cost 1/1/18 $ 99,400 1 4 $ 7,500 Straight-line 4 2 1/1/18 118.000 10.000 Declining balance 4 3 Units-of activity 1/1/19 8,000 82,400 For the declining balance method, the company uses the double declining rate. For the units of civity method, total miles are expected to be 120.000. Actual miles of use in the first 3 years were 2019.27,000;2020,31,50 od 2021.31.500. (1) x Your answer is incorrect unswer to 2 decimal places, eg. 0.50) For Bus 63, calculate depreciation expense per mile under units of activity method. (Rou $ 0.83 per mile Depreciation expense